Exhaust pipe adapter



FIG. 1 is a right side elevational view of an exhaust pipe adapter showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan thereof;

FIG. 5 is a back end view thereof; and,

FIG. 6 is a front end view thereof. 

The ornamental design for a exhaust pipe adapter, as shown and described. 